Quest

Quests are a set of interlinked missions that give various rewards upon completion, as well as providing lore for Warframe's setting. Some quests such as Vor's Prize are mandatory as players will automatically be redirected by the quest, while some are optional (like Hidden Messages and Howl of the Kubrow). Several Junctions require quests to be completed in order for the junction to be unlocked. Additionally, a number of junctions award quests on completion. To activate a quest after it has been unlocked, simply walk to the Codex station in the Orbiter, select the Quests tab, select the desired Quest and click 'Begin Quest'.

Sometimes, completing a quest objective may not yield the next objective upon returning to the Orbiter (Quest markers in the Operations window, Inbox messages, etc.). Logging out and then logging back in typically resolves this issue.